I particularly like
- the concept of switching Views more quickly by using Ajax
- Tabs to the sidebar (but see "don't like" below)
- new Quick Search
- LOVING filters, so much easier to use now.

I **don't** like the extra width now with the fixed-width sidebar. I've reduced the Task column but still cannot fit in all the info for each line (I don't automatically show all fields). Any work you can do to resolve this would be much appreciated!! For eg, a resizeable sidebar with "View By" changing to single column if user-resized/reduced? I would be happy to sacrifice some Project/Folder info in the sidebar if I had the option to resize the sidebar myself.

Yes, it is going to take a little time to re-learn my work patterns but it looks like it is going to be worth it.

My default due date for new tasks is Today. However, when I use the new 'Quick Add Task' no due date is given. If I use the 'n' keyboard short-cut it works, but not in the new 'Quick Add Task' feature. I use Chrome.

As a UX designer with a dozen years experience, I wanna chime in with "THIS ROCKS!" Great job! I was startled at first by the changes - especially flipping the top and left navigation regions. But it only took 3 minutes of exploration to get comfortable. Everything is easier to find and use.

Can the left side bar be hidden (as was previously the case)? In this new design, I'm forced to scroll horizontally.

Understood that many people have wide screens. But not all of us.

update:
Trying to make this work:
• I narrowed several columns and deleted several others. I can get the side bar and the list of my tasks into 1024 pixels (with less information than I previously had).
• the right-most column (which has the trashcan and the toggle for the task detail) cannot be resized so there is a lot of wasted space there. In addition, I don't see a way to hide that column--I can hide the trash, but not the icon to expand into detail view (please advise if I am mistaken).
• why wasn't there any advance notice? Or did I just miss it?

I am glad that the general response is positive. It took months of work, and I am happy that most of you like it.

We will be re-adding "themes" or "skins" at a later date. Also, we will be exploring ways to allow the left column to be minimized when not needed. We did a lot of testing, but there still might be some small kinks to work out. For example, we already fixed the bug reported above that was causing the return key to not work when adding a new task.

When I found and started using Toodledo, I noticed a "for real" decrease in my stress level. No joke. It was that helpful. I attribute this to the Hotlist and the tagging features and the very very very simple UI.

My first observation is the disconnect between the view and the view's label. Before, the tabs were directly above the view and there was no denying what you were looking at. Seeing the view label on the side, and seeing it highlighted in such a faint way, is worrisome. I hope I get used to it.

The Add Task button, although it's bigger and closer to the action on the upper left doesn't look very clickable. On rollover, the text changes from one grey to another slightly different grey.

The darker color scheme grabs my attention unnecessarily. The older UI had no major dark spots anywhere and so my eye wasn't drawn anywhere arbitrary. The dark gray bands and the dark blue band on top keeps grabbing me for no good reason.
Again, I'll try to get used to it! :-)